Intellisense in Visual Studio 2010 is a very powerful tool. Among other things, it gives someone coding against a class additional information about a particular method and its parameters.

In the example below, we’ve just typed the opening parenthesis after the name of the Bark method. An Intellisense window pops up and tells us about the method and its parameter.

To support Intellisense, you need to add XML documentation to your method. To start with, enter “///” on a blank line immediately preceding the first line of your method. Visual Studio will create an empty template for you to fill in.